The compound is known in two structurally different forms, "brownish-black" and "green". The brownish-black form is a stable solid and can be prepared by reaction of water solutions of cobalt(II) chloride and sodium hydroxide, followed by oxidation with ozone.[1]
The green form, formerly thought to be cobalt(II) peroxide, apparently requires carbon dioxide as a catalyst. It can be prepared by adding hydrogen peroxide to a solution of cobalt(II) chloride in 96% ethanol at –30 to –35°C, then adding a 15% solution of sodium carbonate in water with intense stirring. The resulting dark green powder is fairly stable at liquid nitrogen temperature, but at room temperature it turns dark brown within a few days.[2]
Natural occurrence
Cobalt(III) hydroxide is unknown among the known mineral species (as of 2020). However, heterogenite, CoO(OH), is known.[3][4]
^Pankratov, D.A., Veligzhanin, A.A., and Zubavichus, Y.V. (2013): "Structural Features of Green Cobalt(III) Hydroxide". Russian Journal of Inorganic Chemistry, volume 58, issue 1, pages 67–73. doi:10.1134/S0036023613010142
^Pankratov, D.A., Portachenko, T.A., and Perfil’ev, Y.D. (2008): "Emission Mössbauer Study of 'Cobalt Peroxide'". Moscow University Chemical Bulletin, volume 63, issue 5, pages 292–296. doi:10.3103/S002713140805012X
cobalt, hydroxide, cobaltic, hydroxide, chemical, compound, with, formula, coo3, ionic, compound, with, trivalent, cobalt, cations, hydroxyl, anions, namesiupac, name, other, names, cobaltic, hydroxideidentifierscas, number, 1307, model, jsmol, interactive, im. Cobalt III hydroxide or cobaltic hydroxide is a chemical compound with formula Co OH 3 or H3 CoO3 It is an ionic compound with trivalent cobalt cations Co3 and hydroxyl anions OH Cobalt III hydroxide NamesIUPAC name Cobalt III hydroxideOther names Cobaltic hydroxideIdentifiersCAS Number 1307 86 4 Y3D model JSmol Interactive imageChemSpider 8278661 YECHA InfoCard 100 013 776EC Number 215 153 0PubChem CID 10103133UNII S42YMM16W7CompTox Dashboard EPA DTXSID50926862InChI InChI 1S Co 3H2O h 3 1H2 q 3 p 3 Y pubchem Key FXVNMSSSMOVRTC UHFFFAOYSA K Y pubchem SMILES OH OH OH Co 3 PropertiesChemical formula Co OH 3Molar mass 109 95522 gAppearance brown black or dark green powderHazardsGHS labelling PictogramsSignal word DangerHazard statements H319 H334 H413Precautionary statements P261 P264 P273 P280 P285 P304 P341 P305 P351 P338 P337 P313 P342 P311 P501Except where otherwise noted data are given for materials in their standard state at 25 C 77 F 100 kPa Infobox references The compound is known in two structurally different forms brownish black and green The brownish black form is a stable solid and can be prepared by reaction of water solutions of cobalt II chloride and sodium hydroxide followed by oxidation with ozone 1 The green form formerly thought to be cobalt II peroxide apparently requires carbon dioxide as a catalyst It can be prepared by adding hydrogen peroxide to a solution of cobalt II chloride in 96 ethanol at 30 to 35 C then adding a 15 solution of sodium carbonate in water with intense stirring The resulting dark green powder is fairly stable at liquid nitrogen temperature but at room temperature it turns dark brown within a few days 2 Natural occurrence EditCobalt III hydroxide is unknown among the known mineral species as of 2020 However heterogenite CoO OH is known 3 4 See also EditCobalt II hydroxide Co OH 2 Cobalt III oxyhydroxide CoO OH References Edit Pankratov D A Veligzhanin A A and Zubavichus Y V 2013 Structural Features of Green Cobalt III Hydroxide Russian Journal of Inorganic Chemistry volume 58 issue 1 pages 67 73 doi 10 1134 S0036023613010142 Pankratov D A Portachenko T A and Perfil ev Y D 2008 Emission Mossbauer Study of Cobalt Peroxide Moscow University Chemical Bulletin volume 63 issue 5 pages 292 296 doi 10 3103 S002713140805012X Heterogenite List of Minerals 21 March 2011 Retrieved from https en wikipedia org w index php title Cobalt III hydroxide amp oldid 1091531216, wikipedia, wiki, book, books, library,
